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romanna [79]
3 years ago
14

Frederick tossed a number cube and then tossed a coin 100 times as part of an experiment. He recorded the number of times he tos

sed a six or tossed a number other than six, and the number of times the coin landed on heads or tails. The results are listed in the table below.
Based on these results, what was the probability that Frederick’s coin landed on tails after he tossed a six?


A.3/25

B. 31/100

C. 12/31

D. 69/100

Mathematics
2 answers:
Marysya12 [62]3 years ago
8 0
Hello <span>Ravon326

how is your day going?
hope well 
so the anser to this is going to be drum roll 

/\/\/\/\/\/
</span>41 + 19 + 28 + 12 = 100 and i did bully
<span>A.
/\/\/\/\/

hope this helps 
if not plz let me know 
have a good day 
if u need more help let me know and i will try my best 
toby out</span>
bekas [8.4K]3 years ago
6 0
Hello!

You have to add how many trials he did

41 + 19 + 28 + 12 = 100

Now you look for the box that has 6 and tails

It has a 12 in it

You do 12/100

This can be reduced to 3/25

The answer is A

Hope this helps!
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150 parents were surveyed. 26% said that the kids were noddy and 70% said their kids were nice. How many parents didn't answer w
alexandr1967 [171]

Answer:

The parents who didn't answer with either naughty and nice are <u>6</u>.

Step-by-step explanation:

Given:

150 parents were surveyed. 26% said that the kids were naughty and 70% said their kids were nice.

Now, to find parents who didn't answer with either naughty and nice.

<em>So, as given in question:</em>

<em>70% said that their kids are naughty.</em>

<em>26% said that their kids are nice.</em>

So, to get the percentage of parents who didn't answer we subtract.

<em>Thus, the percentage of  parents who didn't answer with either naughty and nice:</em>

100% - (70% + 26%)

100% - 96% = 4%.

Hence, 4% of parents didn't answer.

Now, to get how many  parents didn't answer we calculate the percentage of the total who didn't answer:

<em>Total parents surveyed = 150.</em>

<em>Parents who didn't answer =  4% of the total parents surveyed.</em>

Parents\ who\ didn't\ answer = 4\% of 150.

Parents\ who\ didn't\ answer = \frac{4}{100}\times 150.

Parents\ who\ didn't\ answer = \frac{600}{100}.

Parents\ who\ didn't\ answer = 6.

Therefore, the parents who didn't answer with either naughty and nice are 6.

8 0
3 years ago
The ratio between the radius of the base and the height of the cylinder is 2:3.if its volume is 1617cm^3,the total surface area
zalisa [80]
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The volume of the cylinder is : V = π r² h
<span>The ratio between the radius of the base and the height of the cylinder is 2:3:
r/h = 2/3
h = 3/2r

V = 1617 cm
</span>π = 3.14

1617 = πr² * 3/2 r
1617 = πr³ * 3/2
1617 * 2/3 = πr³
1078 = πr³
r³ = 1078/π = 1078/3.14 = 343
r = ∛343 = 7 cm

h = 3/2r = 3/2 * 7 = 10.5 cm


The surface area of the cylinder is:
SA = 2πr² + 2πrh
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      = 307.72 + 461.58
      = 769.3 cm²
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